Metal-forging apparatus.



E. E. SLIGK.

METAL PORGING AAPPARATUS.

APPLIGATION FILED PEB. zo, 1911.

'Patented Apnz, 1912.

WITNESSES E. B. SLIGK; METALPQRGING PPARATUS. APPLIGATIQN FILED 11:13.20, 1911. 1,022,006. l Patented ADI'. 2, 1 912. a SHEETS-sund.

E., AN

E. E. SLIGK.

METAL FORGING APPARATUS. APPLICATION F'ILED PBB.20, 1911.

Mm 7 ,im m ,3 QN f/M/ a 1M P ll m ,www .g

WITNESSES www WMM/W -rrnn sirafrns rArENr onirica.

'Maranroaer'ne APPARATUS: l` 1- Loeaooe.

To all whom t may co'memiv i ,s z Be'it'known that I, EDWINE. Snromfof Pittsburgh, in the county of'Allegheny and State of Pennsylvania, have invented new and useful Intnprov'ements in Metal-Forging Apparatus, of which the following 1s a full, clear, and exact descrlptlon, reference belng 'had to the accompanying drawings, formforging metal.

ing part of thisv specification.

Myinvention relates to apparatus used 1n forging vand more .particularly relates to to ,the desired contour and size and having" iinproved means whereby the forging apparait-us is actuated.

Another `object of my' invention is to provide apparatus for forging having novel means for resisting the enormous end thrust developed in the operation of the apparatus and for extending thefllifeV of such-thrust; resisting surfaces.

Referring to the drawings, Figure 1is aplan showing forging apparatus constructed and arranged in accordance with my invention. Fig. 2 is a sectional side elevation of the apparatus shown in Fig. A'1 showing the manner in which the one forging die isl caused to wabble in imparting/a forging movement to the apparatus. Fig.l 3 is a sectional end'elevation taken on the line Ill-H of Fig. 2, showing the manner in Awhich one forging die shaft is mounted in the frame of `the apparatus. AvFig. 4: is a similar View, the section being taken on the line V--IV of Fig. 2- showing the front of the wabhling die face forming part of this apparatus.

In, the accompanying vvdrawings, 2 designates the hed-plate or base-plate of the apH paratus, having, as shown, a stationary hearing or support 3 for the wabbling die i and its shaft 18. Alsomounted on the bed-plate 2 *is the bearing or support 5'f0r the shaft y 7 which is arranged to. be adjusted length@- 4 Speeieat'ion of Lettefsrtents* fltentedAprf i application kileii February 20,;191'1. A Serial No. i E

vmounted inthe supporto; and Ythe rear.'end',of` vthe shaft f7 isprovided .witljrav plungr the flanged end of the Adie'shaft,?y whiolris proj ecting rearwardly AAiuto. 1 h i stationary`l` fluid pressure cylinder i9y Vwhich is mounted' uponlthe extension 10 to,thebaseffplateg The cylinder 9 rigidly connectedtov rthe bearing 5 by the tie-rods `,or-bolts11,;.these parts being also securely connected togethenug 4through the base plate ,2 and .base plateextension 10. The rear. end'of the cylinder 9 is provided with Va .stationary -p,ist )n.12 which extends into thegmoyable pull-back support 14 secured in: place @to Lvthe1;earefnd of theicylinder 9,1and the,.pu-ll#hack-f` cylinder, 13 is connected to the, rear endc-theLdi shaft 7 by means of -theflnks Qreyabarsil Mounted in'the recess 162 i-n` ythe front endof the" bearing orsupport- "is a removable bearing block,17. hav1ng a.conc'aye.fa ceiand the Vouter end of the.r wabbling' die-shaftlS `is provided with a ring lg'having .a convex spherical face (zo-acting`r with;l ,the l' concave;v face of the bearing block;1,6,,the,spherictdly V faced ring 19beingdetachablysecured in place on' the ianged'end oftheshaftlS.

low shaftis the; crank pin`v 20 on thecrank 21`whichris mounted in the bearing 22 provided in the rear end of the support :3.wThe

with adrivilr motor.'- Theconstruction ofv this coupling mecha-nismibein oldandwell known is notfurthe describe' ,Landa-ripidesir'ed type of motor.maybe-Hemployed in driving the forging apparatusur-.f

A tie rod or bolt 24 extendsgthrough any 'c v openingl providedv forl that purposein l,the 100 crank/pin 20 anda similar'openin injthe die end of the shaft 18de-securely old the.

parts in assembledI position.

. Preferably the stationary die pro-'- blanks during the forging operation!n and to form anv axial recess: orfholein the for-ged blanks. Such -in"however.1naybeiused or not, as is found necessary'.ofconsideredde -l .rotary forging ydie 6 is detachablyfsecuredon The. shaft 18.; as `sho nfism'adehollow and vextending into the o .eningflinthis h ')l1.-y

crank 21 is provided withjthe4 usual wabbler. .23 through which Yit-.is connected thyy the usual couplin 4 box and Vdriving:-.lspindle held between the die faces is forced into l, proved apparatus. A

In the operation'of my improved vapparatus, fluid pressure is admitted to the pullback cylinder 13 as to retract .thenonrotary die 6, this niovementadvancin the end of the plunger 8 into'the cylin er 9.

and causing the dieG to'move away from the die 4. .A suitably shaped blank which ordinarily is heated is then placed between the opposingfaces of the dies and fluid pressure is admitted to the cylinder 9 so asA to advance the plunger 8, and, through the shaft 7, the die 6,lso as to bringthe opposing faces of the dies into engagement` with the opposite faces of the blank to be forged.`

Before placing the blanks in position the driving motor is preferably started so as' to rotate the crank 21, which will cause the Wabbling shaft- 18 to move, the axis of the Wabbling shaft 18 describing a conical path Whose apex is at or 'adjacent to the intersecting axial centers of the opposing dies. The rocking or wabbling movement lof the shaft 18 and its'die 4 is then continued Whilefluid pressure is ybeing constantly applied to the plunger 8 so as to gradually advance the faceof the die 6 toWaid the face of the opposing dieand the'blank the cavities in the opposing die faces and is in this Way'forged to the desired contour and size. After the completion of the forging operation the die 6 is retracted and the so-formed blanks removed, yand the above described operations are repeated asjoften as is required in the operation o f my im- The advantages of my'invention `willbe apparent ,to those skilled iii the art. The die 6 is positively prevented from rotating -and the ivabbling die 4 is Wabbled Without positive rotation thereof, although there may be some slight lrotative movement of the die 4C during the continued Wabblingof this die. The thrust bearing formed by the spherical faces ontheopposing bear-ing blocks provide a simple and effective means for taking up .the enormous end thrust put uponvthe apparatus by the forging opera-A tions, which reduces the movement of the opposing thrust faces to a minimum.

The apparatus is simple and is easily kept in repair, and expensive delays in the op- ,eration of the apparatus caused in makingl repairs' to the apparatus are avoided and overcome.

Modifications 1n the construction and ar- .lv-rangement of the parts may be made With- 6-5 posing dies, shafts on which the dies are lout `departing from my.invention as set i forth inthe claims. The shape of the forgso` ing dies may be modified in many Waysl to suit theparticulararticlel being forged,

and other changes may be made i I claim 1. Apparatus for` forging comprising op'- niounted, supports for said shafts, means for causing relative approach of said dies andineans on the end of one die shaft arranged to wabble said die and shaft with respect to the support therefor.

2. Apparatus for lforging comprising op- 'posingdies, shafts Von which the dies are mounted, supports for said shafts, means .for causing relative approach of said dies and a driving shaft having a crank connec Vtion With one of said diesliafts and arranged to wabble said die and shaft with respect to the support therefor.

3. Apparatus for forging comprising opposeddie faces at an angle to each other, shafts on which said die faces4 are mounted,

supports for said shafts, means for causing relative approach of said die faces and ineans'includingl a ,crank connected to one shaft and arranged to Wabble said die and shaft-With -respect to the support therefor.

4;, Apparat-us for forging comprising a die support, a die holder having a shaping die on one end thereof angularly mounted in the suppoit and a rotatable crank connected t0 said die holder and arranged to Wabble said die and shaft with respect to the support therefor.

5. Apparatus for forging comprising a. support, a die holder having a forging face 'thereon angularly mounted in the support and a rotary driving shaft having a crank,

vsaid crank being connected to the angular die holder and arranged to wabble said die 2nd shaft With respect to the support there- Apparatus for forging comprising opposed die faces at an angle to each other, shafts on Which said die faces are mounted, supports for said shafts, means for causing relative approach of said die faces and means including a crank connected to one shaft and arranged to Wabble, said die and shaft with respect to the support therefor.

'7. Apparatus for .forging comprising a forging die, a holder therefor, a support for lthe diev holder, and means connected to the die holder arranged to wabble said die and shaft With respect to the support therefor.

8. Apparatus for forging comprising opshaftA onits support to cause relative approach ofthe dies, means on the opposite shaft-.for wabbling said shaft in its support and a'V thrust bearing on the Wabbling shaft 'rio shaft on-its' support tov cause relative apand shaft support, the Contactin facesv ofv .for the die shafts, 1neans`-for moving one shaft on its support 'to canse -Yrelative approach of the dies, means on the opposite shaft forv Wabbling-said shaft in its support, and a thrust bearlngon the Wabbling shaft and shaftsupport with a removable ring on the shaft having 'a convex vface forming one bearinr face ofthe thrust bearing.` Y

11. pparatus for forging comprising opposing dles, shafts. for said dies, supports for the die shafts, means' for moving one preach. of the dies, means on the opposite shaft for' Wabbling said shaft in its support, 4andla thrust bearing on the wabbling lshaft and shaft supportWvit-hA a removable ring onthe shaft support having aconcave face forming one bearing face 'of said thrust bearing.

poslng die faces,

12. v`Apparatus for forgingcomprising opposingdles, shafts for said dies, supports for-thel die' shafts, means for 'moving one shaft on its support to cause relative approachof the dies, means on the opposite shaft for Wabbling said shaft in its support,

and athrust bearing on 'the Wabbling-shaft land shaft support, ysaid bearing comprising removable rings on the shaft land shaft' support with contacting spherical Wearing faces., 4 f

. 13. Apparatus for forging com supports there or, one of said dies `being mounted in its support:l to

vpermit Wabbling of said die with respect to -its support vand means for actuating said Wabbllng die. r

' In testimony whereof, I have hereunto set my hand.

' ,EDWIN E. sLIoK.

v Witnesses;

`Gr. NV. NEILL, AM. `CORWIN.

Copies of this patent maybe obtained for v'cents each, by addressing the Gommissionerl of Patents.

I Washingtmx,y D. G.l`

e at rising op- 

